Stem-winding watch



2 Sheets-Sheet 1.

(Model.)

D. A. A. BUCK. Stem Winding Watch.

Patented Nov. 9,1880.

NFEIiRS. FHOTO-LITHOGRAFHER, WASHINGTON, O C.

2 Sheets-Sheet 2.

(ModeL) D. A. A. BUCK, Stem Winding Watch.

No. 234,235. Patented Nov. 9,1880.

N. PETERS, PHOTO UNITED STATES PATENT OFFICE.

D. AZRO A. BUCK, OF \VATERBURY, CONNECTICUT.

STEM-WINDING WATCH.

SPECIFICATION forming part of Letters Patent No. 234,235, dated November 9, 1880.

(Model) To all whom it may concern:

Be it known that I, D. AZRO A. Boon, of Waterbury, in the county of New Haven, and in the State of Connecticut, have invented certain new and useful Improvements in Stem- Winding Watches, (Case A;) and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making apart of this specification, in which- Figure l is a perspective view of the case, gear-plate, notched ring, spring-wheel, and cap separated from each other. Fig. 2 is a like view of said gear-plate and spring-wheel from the rear. Fig. 3 is a plan view of the case with the gear-plate in position. Fig,et isa-like view of the same with the notched ring in place. Fig. 5 is a plan View of said parts with the spring-wheel in place. Fig. 6 is a section upon line to w of Fig. 5, and Fig. 7 is a like view upon line 2 z of Fig. 5.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to expedite the winding of the mainspring, to strengthen and render more secure the connection between the movement and the case, and to enable the spring detent which prevents the uncoiling of said mainspring to be more easily released 5 to which end it consists, principally, in the means employed for securing the gear -plate and notched ring in place within the casing, substantially as and for the purpose hereinafter specified.

It consists, further, in the means employed for communicating motionfrom the stem-wheel to the spring-wheel, substantially as and for y the purpose hereinafter shown.

It consists, further, in the means employed for confining in place the intermediate wheels of the winding-train, substantially as and for the purpose hereinafter set forth.

It consists, further, in the means employed .for releasing the spring-detent which engages purpose hereinafter specified.

It consists, finally, in the combination of the cap, notched ring, and gear-plate, substantiall y as and for the purpose hereinafter shown.

In the annexed drawings, A represents the center of a watchcase, in which is amovement, B, that is pivoted centrally, and is arranged to revolve around its axis. Within the rear inner corner of the center A is provided a right-angled rabbet, a, in which is fitted a plate, 0, that furnishes a bearing for the lear pivot, 12, of the movement B, and is secured in position by means of a steady-pin, c, which projects radially from its peripheryinto a corresponding opening that is provided within the case center A near the pendant A.

Fitted within the rabbet a, in rear of the plate 0, is aring, D, which, upon its inner edge, is provided with notches or teeth (I, for engagement by a stop mechanism. Said notched ring is provided with a radial steady-pin, d, which projects from its periphery into a corresponding opening in the case-center A, said opening being directly opposite to the opening for the reception of the steady-pin c of the plate 0.

\Vithin the ring D is placed a plate or wheel, E, which, at its center, is journaled upon the pivot Z), and at ornearits edge, upon its upper side, is provided with lugs 6, within which is coiled a mainspring, F, theinner end of which spring is attached to or upon said pivot 12, said platethus forming a spring wheel or barrel.

Secured upon the lower face, at the center of the spring-wheel E. is a spur-gear wheel, 6, which projects below said face and is contained within a corresponding recess, 0, that is provided within the outer face of the plate 0. A second and third similar gear-w heel, G and H, respectively, are placed within suitable recesses c and 0 respectively, in said plate 0, and mesh with each other and with said wheel 0, and extend between the latter and a gear wheel, I, that is attached to, and rotates with, a stem, K, which is journaled within the pendant A, and has upon its outer end a crown, t, the arrangement being such as to enable said spring-wheel to be revolved by turning said stem, the motion of the latter being communicated to the former by means of the train of gearing described.

The gears Gand H are each pivoted upon a hub, c and 0 respectively, which are left when the recesses c and c are formed; and in order that said wheels may be kept in place a plate, L, is fitted into the plate 0, with its upper side flush with the face of the latter, and partially covers each of said wheels. Said plate L is secured in place by means of a screw, l, that passes through its center into the hub 0 This arrangement enables said wheels to be secured in place by means of one screw.

The spring-wheel is prevented from rotating rearward by means of a spring detent, M, which is secured at one end upon the lower face of the plate 0, and has its free end in engagement with the stem wheel I. In order that said detent may be removed from engagement with said wheel, when it is necessary to let down the spring F,.a pin, 422, provided at its lower end with a head, m, is placed within an opening in the plate 0 and ring 1), its head being below said plate and in contact with said detent, and its opposite end projecting above said ring. It, now, the pin m is pressed downward, the detent M will bemoved out of engagement with the wheel I and the latter permitted to turn freely rearward. Upon releasing said pin said detent will spring into engagement with said wheel once more.

Fitted over the spring F is a cap, N, which, at its edges, rests upon the notched ring D, and is secured to said ring and to the plate 0 by means of two or more screws, n, that pass through said cap and ring and have their threaded ends contained within correspondingly-threaded openings that are provided in said plate.

One side of the plate 0 is held down by its steady-pin, and the opposite side by the steadypin of the notched ring D, while the screws a, passing through said parts and the cap N, firmly bind the same together, so that neither can move or become misplaced. l

Having thus fully set forth the nature and l merits of my invention, what I claim as new 1. The combination of the gear-plate provided with the steady-pin c, the notched ring D, having the steady-pin d, and the case center A, provided with the rabbet a, and openings for the reception of said steadypins, substantially as and for the purpose specified.

2. In combination with the spring-wheel E, provided with the gearwheel e, the gearwheels G and H, the stem-wheel I, and the stem K, substantially as and for the purpose shown.

3. In combination with the gear-wheels G and H, journaled within the recesses c and 0 respectively, of the plate 0, the plate L, fitted into said plate 0 and covering a portion of each of said wheels, substantially as and for the purpose set forth.

4. In combination with the stem'wheel 1, the detent III, secured upon the plate G and engaging with said wheel, and the pin m, provided with the head m, and arranged within an opening in said plate, with its said head in contact with said spring, substantially as and for the purpose shown and described.

5. In combination with the movement B and with the spring-wheel E, the plate O interposed between said parts and attached to the case-center A, substantially as and for the purpose specified.

ti. The combination of the gear-plate O, the notched ring D, and the cap N, substantially as and for the purpose shown.

In testimony that I claim the foregoing I have hereunto set my hand this 27th day of March, 1880.

D. AZRO A. BUCK.

Witnesses: Y

J AS. E. HUrroHINsoN, HENRY G. HAZARD. 

